Hi,
I have upgraded to Ecosystem 3.1.1 and have started to get warnings in TF-A when booting up my stm32mp151c. These are the warnings:
NOTICE: CPU: STM32MP151CAA Rev.B
NOTICE: Model: STMicroelectronics custom STM32CubeMX board
NOTICE: Bootrom authentication failed
WARNING: regulator_get_by_phandle: phandle 14 not found
WARNING: VDD unknown
INFO: Reset reason (0x15):
INFO: Power-on Reset (rst_por)
INFO: FCONF: Reading TB_FW firmware configuration file from: 0x2ffdd000
INFO: FCONF: Reading firmware configuration information for: stm32mp_io
INFO: FCONF: Reading firmware configuration information for: tbbr
INFO: Using EMMC
INFO: Instance 2
INFO: Boot used partition fsbl1
WARNING: regulator_get_by_phandle: phandle 19 not found
Everything works as expected and the board boots as normal. But I don't understand why these warnings appear. I have localized in the source code that there are some patches added to the TF-A in ecosystem 3.1.1.
In tf-a-stm32mp/plat/st/stm32mp1/stm32mp1_syscfg.c
/* Get VDD supply */
vdd_voltage = dt_get_pwr_vdd_voltage();
/* Check if VDD is Low Voltage */
if (vdd_voltage == 0U) {
WARN("VDD unknown\n");
And in tf-a-stm32mp/plat/st/common/stm32mp_dt.c
struct rdev *dt_get_vdd_regulator(void)
{
int node = fdt_node_offset_by_compatible(fdt, -1, DT_PWR_COMPAT);
if (node < 0) {
return NULL;
}
return regulator_get_by_supply_name(fdt, node, "vdd");
}
Where DT_PWR_COMPAT is defined in tf-a-stm32mp/plat/st/stm32mp1/stm32mp1_def.h
#define DT_PWR_COMPAT "st,stm32mp1,pwr-reg"
The phandle error is related to the vdd node in my dts:
vdd: regulator-vdd {
compatible = "regulator-fixed";
regulator-name = "vdd";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
&pwr_regulators {
compatible = "st,stm32mp1,pwr-reg";
system_suspend_supported_soc_modes = <
STM32_PM_CSLEEP_RUN
STM32_PM_CSTOP_ALLOW_LP_STOP
STM32_PM_CSTOP_ALLOW_LPLV_STOP
STM32_PM_CSTOP_ALLOW_STANDBY_DDR_SR
>;
system_off_soc_mode = <STM32_PM_CSTOP_ALLOW_STANDBY_DDR_OFF>;
vdd-supply = <&vdd>;
vdd_3v3_usbfs-supply = <&vdd_usb>;
status = "okay";
};
I have tries several different versions of the dts but I still keep getting the same warnings. I have also tried to set vdd-supply to <&usb33> from arch/arm/boot/dts/stm32mp151.dtsi.
Do you have any suggestions on how to solve this?
